Finally, with the application to Measuring and contrasting of real signal, the result shows the system is effective and feasible.

最后通过对实际信号的测量以及对比，表明该振动测试系统达到了设计要求。

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In geophysics, reflection refers to the seismic energy or signal that returns from an interface of contrasting acoustic impedance, known as a reflector, according to Snell's law.

在地球物理中，反射指的是地震能量或信号在反射面（具有不同声阻抗的地层分界面）处按照斯奈尔定律发生的回转。

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On the face of it, these contrasting US and Russian announcements seem to signal that geopolitics have reverted to the Cold War model of two superpowers competing for global power by, among other things, assisting their proxies in fighting one another.

CENTERFORSECURITYPOLICY: America's best friends